Last night, overnight, I noticed that my car horn was chirping like I was pressing my button on the keyfob to set the alarm. What do I need to look at to fix this? The keyfob is only a few months old. I've tried the search but apparently I'm not wording it right to find what info I need. The battery in my car is pretty new to, replaced earlier this year. Stumped. Keyfob was in another room so no one was messing with it.